Be sure to follow this template:
Product and version (e.g. FileMaker Pro 14.0.3): 17.02.205
OS and version: 10.13.6
Browser and version (for WebDirect only)
Hardware: Mac Book Pro
Layout with a 6 tabs field
3rd tab in when it is clicked the first tab layout and fields remain visible. click again they go away.
Same happens going back, one click two layouts, second click desired appearance of the one layout.
How to replicate
Have not tried in other solutions on other installs yet.
Still working on this solution
Workaround (if any): click twice, make a button and put it over- on top the tab.